we have constant hot air flowing out of the floor vent, and its getting old, its really hot on the leg. the a/c works fine when turned on. the heat works on all settings, but no matter what position you put it in, i.e. floor, defrost, etc. it will always come out of the floor as well. and im thinking that it is taking most of the flow from the defrost because it doesnt come out very strong from the defrost. anyone have any ideas what it might be? im not hearing a clink sound like some people do. i can hear something moving when i push the buttons for defrost, floor, etc. thanks for the input. its a 2002 Eddie Bauer 4.0 v6 with the electronic heat, a/c system.

it also comes out the floor even when the system is shut off.

This is a real pain in the leg! I went through the user manual yesterday because of the slow clearing of the windshield. Cold days I have to lean over to drive peering through the small clearing in the middle of the windshield, unless I let it warm up for twenty (dollars).
Hot leg frozen windows!!!
Never had this with the 97
steve